2009ApJ...705..885O

Query : 2009ApJ...705..885O

2009ApJ...705..885O - Astrophys. J., 705, 885-898 (2009/November-1)

Polycyclic aromatic hydrocarbons in galaxies at z ∼ 0.1: the effect of star formation and active galactic nuclei.

O'DOWD M.J., SCHIMINOVICH D., JOHNSON B.D., TREYER M.A., MARTIN C.D., WYDER T.K., CHARLOT S., HECKMAN T.M., MARTINS L.P., SEIBERT M. and VAN DER HULST J.M.

Abstract (from CDS):

We present the analysis of the polycyclic aromatic hydrocarbon (PAH) spectra of a sample of 92 typical star-forming galaxies at 0.03 < z < 0.2 observed with the Spitzer intensified Reticon spectrograph (IRS). We compare the relative strengths of PAH emission features with Sloan Digital Sky Survey optical diagnostics to probe the relationship between PAH grain properties and star formation and active galactic nuclei (AGNs) activity. Short-to-long wavelength PAH ratios, and in particular the 7.7 µm-to-11.3 µm feature ratio, are strongly correlated with the star formation diagnostics Dn(4000) and Hα equivalent width, increasing with younger stellar populations. This ratio also shows a significant difference between active and non-active galaxies, with the active galaxies exhibiting weaker 7.7 µm emission. A hard radiation field as measured by [O III]/Hβand [Ne III]_{15.6 µm}/[Ne II]_{12.8  µm} effects PAH ratios differently depending on whether this field results from starburst activity or an AGN. Our results are consistent with a picture in which larger PAH molecules grow more efficiently in richer media and in which smaller PAH molecules are preferentially destroyed by the AGN.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: ISM - ISM: lines and bands - ISM: molecules - infrared: galaxies - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/ApJ/705/885): table1.dat>

Nomenclature: Table 1: SSGSS NNN (Nos 1-101).

Simbad objects: 93

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Number of rows : 93
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 LEDA 3408019 G 10 32 53.9851170480 +58 06 33.119210736           ~ 11 0
2 2MASS J10352530+5817095 AGN 10 35 25.3253639736 +58 17 09.525044436           ~ 7 0
3 2MASX J10353876+5735434 AGN 10 35 38.6912187168 +57 35 43.341070596           ~ 7 0
4 2MASX J10353919+5742444 AGN 10 35 39.2206689264 +57 42 43.916736780           ~ 9 0
5 SDSSCGB 60984.1 G 10 35 54.1557083832 +58 18 36.100492848           ~ 10 0
6 2MASS J10355784+5725003 G 10 35 57.8383234752 +57 25 00.220653696           ~ 11 0
7 LEDA 3408268 rG 10 36 06.467 +57 47 02.52           ~ 15 0
8 2MASX J10361164+5743215 AGN 10 36 11.7141965688 +57 43 21.291170808           ~ 10 0
9 2MASS J10361546+5739148 LIN 10 36 15.4744586016 +57 39 14.947546140           ~ 7 0
10 2MASS J10365355+5754426 G 10 36 53.481 +57 54 42.66           ~ 12 0
11 LEDA 3408038 G 10 37 23.2133577888 +57 31 14.581212456           ~ 13 0
12 SDSS J103732.04+572305.6 G 10 37 32.0486305056 +57 23 05.607132000           ~ 10 0
13 SDSS J103804.64+580255.7 G 10 38 04.6547826768 +58 02 55.732816572           ~ 9 0
14 2MASS J10383241+5724009 AGN 10 38 32.4257765256 +57 24 01.167684048           ~ 12 0
15 SDSS J103856.53+571548.9 G 10 38 56.5719326352 +57 15 48.954116304           ~ 11 0
16 LEDA 3758697 G 10 39 25.9996485960 +57 58 04.909891368           ~ 7 0
17 SDSS J103928.19+584729.9 G 10 39 28.2094473456 +58 47 29.875132644           ~ 11 0
18 LEDA 3408316 G 10 39 35.6656652976 +57 59 07.948448952           ~ 10 0
19 SDSS J103956.45+572418.8 G 10 39 56.4525721896 +57 24 18.688458924           ~ 10 0
20 [SW2009] SST24 J103957.23+583934.0 G 10 39 57.1804583904 +58 39 34.122936708           ~ 10 0
21 LEDA 3408164 AGN 10 40 26.2048827264 +57 26 23.212365252           ~ 13 0
22 [SW2009] SST24 J104050.35+572341.3 G 10 40 50.3097999504 +57 23 41.032540932           ~ 9 0
23 2MASS J10410982+5655535 AGN 10 41 09.8362316400 +56 55 53.709323916           ~ 6 0
24 [SW2009] SST24 J104110.48+581523.3 G 10 41 10.455 +58 15 23.12           ~ 9 0
25 SDSS J104113.67+570456.7 G 10 41 13.6846271376 +57 04 56.868457476           ~ 11 0
26 LEDA 2815929 G 10 41 22.5833639400 +58 53 30.934545720   17.0       ~ 13 0
27 FIRST J104139.0+583514 rG 10 41 39.0493552608 +58 35 14.792446212           ~ 14 1
28 2MASX J10413984+5819020 EmG 10 41 39.8888861904 +58 19 02.049131856           ~ 12 0
29 LEDA 3408333 G 10 42 02.4725885760 +57 53 49.417725444           ~ 10 0
30 SDSS J104210.08+583939.5 G 10 42 10.0828350312 +58 39 39.525761340           ~ 11 0
31 LEDA 3408299 AGN 10 42 18.6883080144 +58 40 59.259605124           ~ 9 0
32 2MASX J10430576+5841518 G 10 43 05.7654354432 +58 41 51.877565736           ~ 11 0
33 Z 290-64 LIN 10 43 32.3542842096 +57 40 19.779642912   15.6       ~ 21 0
34 2MASX J10433909+5802509 G 10 43 39.0751835448 +58 02 50.481474972           ~ 10 0
35 2MASS J10434845+5811477 Sy1 10 43 48.4759501848 +58 11 47.650628184   17.48 16.85     ~ 11 0
36 LEDA 3759697 rG 10 44 00.782 +58 45 36.95           ~ 12 0
37 2MASX J10440868+5751410 G 10 44 08.6697555384 +57 51 40.886718372           ~ 8 0
38 2MASS J10442739+5944295 AGN 10 44 27.3826336152 +59 44 29.294763324           ~ 7 0
39 Z 290-68 SBG 10 44 45.1468968672 +58 27 17.828425512   15.35       ~ 41 1
40 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 910 0
41 LEDA 3408364 rG 10 45 01.2928654632 +57 46 32.709139896           ~ 11 0
42 LEDA 2569516 G 10 45 01.67389 +57 39 40.1729           ~ 10 0
43 FIRST J104530.3+581231 rG 10 45 30.3985455984 +58 12 31.787459388           ~ 18 1
44 [SW2009] SST24 J104532.47+583005.7 G 10 45 32.4597281808 +58 30 05.574425436           ~ 7 0
45 2MASS J10453778+5811400 LIN 10 45 37.7658969960 +58 11 40.014567168           ~ 9 0
46 LEDA 2587126 rG 10 45 55.5117446160 +59 09 15.848943660           ~ 20 0
47 LEDA 3408095 rG 10 45 56.9471969592 +57 27 18.732886164           ~ 12 0
48 2MASX J10461193+5826575 LIN 10 46 12.0064413264 +58 26 57.150656844           ~ 11 0
49 2MASS J10462188+5944015 AGN 10 46 21.8603923944 +59 44 01.253337828           ~ 7 0
50 LEDA 3404198 AGN 10 46 52.7485740840 +56 15 06.627509712           ~ 8 0
51 2MASS J10470188+5618240 AGN 10 47 01.8755953632 +56 18 24.020830836           ~ 5 0
52 2MASX J10470453+5620253 EmG 10 47 04.5459988944 +56 20 24.998380620           ~ 20 0
53 2MASS J10470895+5938136 AGN 10 47 08.9534440200 +59 38 13.317035352           ~ 7 0
54 SDSS J104713.38+581039.3 G 10 47 13.3816388208 +58 10 39.292452840           ~ 10 0
55 2MASX J10474253+5618500 G 10 47 42.5021665104 +56 18 50.114187036           ~ 10 0
56 SDSS J104748.12+573438.0 rG 10 47 48.1326149952 +57 34 38.059389840           ~ 10 0
57 LEDA 2583639 rG 10 48 04.0328143224 +58 51 36.018634176           ~ 13 0
58 LEDA 3412012 rG 10 48 05.154 +57 48 54.48           ~ 12 0
59 SDSS J104810.14+562249.5 G 10 48 10.1438945160 +56 22 49.488118428           ~ 12 0
60 SDSS J104811.22+572430.7 rG 10 48 11.22978 +57 24 30.7377           ~ 11 0
61 LEDA 2564719 rG 10 48 17.76965 +57 24 09.9949           ~ 12 0
62 SDSS J104825.26+573959.9 G 10 48 25.2678392448 +57 39 59.855997996           ~ 9 0
63 LEDA 2815932 rG 10 48 29.2928597472 +57 53 56.064275556   17.0       ~ 16 0
64 SDSS J104833.49+590107.9 AGN 10 48 33.4913700600 +59 01 07.939281000           ~ 5 0
65 2MASS J10490419+5613260 AGN 10 49 04.2104036136 +56 13 25.965062508           ~ 12 0
66 2MASS J10490533+5737333 rG 10 49 05.3121387240 +57 37 33.192998976           ~ 8 0
67 2MASX J10492751+5932533 EmG 10 49 27.4525564032 +59 32 53.134449180           ~ 10 0
68 2MASX J10493833+5935032 G 10 49 38.3906593872 +59 35 03.162651432           ~ 7 0
69 2MASS J10495634+5930297 AGN 10 49 56.3598939432 +59 30 30.002511924           ~ 9 0
70 LEDA 3761294 G 10 50 07.197 +59 32 53.52           ~ 10 0
71 SDSS J105008.88+585543.1 rG 10 50 08.8809670824 +58 55 43.221792108           ~ 11 0
72 [SW2009] SST24 J105034.07+592221.7 G 10 50 34.0162869072 +59 22 21.529320060           ~ 9 0
73 Mrk 1441 H2G 10 50 37.2226825632 +59 05 44.947595580   17.0       ~ 29 0
74 2MASS J10511074+5904367 Sy2 10 51 10.7425057968 +59 04 36.704887752           ~ 7 0
75 2MASS J10520202+5633010 Sy2 10 52 02.0328542304 +56 33 01.283317128           ~ 8 0
76 LEDA 2539015 G 10 52 21.7255720104 +56 30 29.889243720           ~ 10 0
77 SDSS J105242.41+571914.5 rG 10 52 42.4224959376 +57 19 14.603499264     18.0     ~ 16 0
78 2MASS J10524755+5629177 LIN 10 52 47.5529704728 +56 29 17.933971992           ~ 9 0
79 SDSS J105252.77+570753.8 rG 10 52 52.7882900712 +57 07 53.901172128           ~ 15 0
80 2MASS J10530133+5705433 rG 10 53 01.3561774608 +57 05 43.088623584           ~ 15 0
81 LEDA 3404398 AGN 10 53 04.7225264688 +56 33 29.061009792           ~ 8 0
82 LEDA 3095998 Sy1 10 53 24.6642123384 +57 12 31.015505340           ~ 18 0
83 LEDA 139454 rG 10 53 35.1888562632 +56 44 31.360958412           ~ 14 0
84 LEDA 2546221 rG 10 53 46.3967006328 +56 44 18.902069880           ~ 10 0
85 MCG+10-16-020 rG 10 54 09.4446311016 +56 49 15.723341724   16       ~ 16 0
86 2MASX J10543226+5709324 EmG 10 54 32.3091409968 +57 09 32.434785864           ~ 15 0
87 SDSS J105450.98+582326.9 rG 10 54 50.9822880696 +58 23 26.876343228           ~ 11 0
88 SDSS J105634.96+584748.3 rG 10 56 34.9746704184 +58 47 48.357512124           ~ 13 0
89 LEDA 3408872 rG 10 57 19.79013 +57 57 06.0228           ~ 12 0
90 2MASX J10575087+5814155 Sy2 10 57 50.8886287968 +58 14 15.266459904           ~ 5 0
91 2MFGC 8562 AGN 10 58 57.9468460680 +58 08 01.109940360           ~ 15 0
92 2MASX J10585995+5815244 G 10 58 59.9640434832 +58 15 24.715003284           ~ 6 0
93 2MASS J10590489+5819198 Sy1 10 59 04.8819269640 +58 19 20.031783240   18.10 17.51     ~ 8 0

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